钾是活泼的碱金属，钾和氧有氧化钾（K₂O）、过氧化钾（K₂O₂）和超氧化钾（KO₂）等多种化合物．

（1）钾和硝酸钾反应可制得氧化钾：K+KNO₃→K₂O+N₂（未配平），每生成9.4gK₂O消耗的还原剂有____ g；

（2）超氧化钾和过氧化钾都能与二氧化碳反应均生成氧气和K₂CO₃，在医院、矿井、潜水、高空飞行中用作供氧剂．写出超氧化钾与二氧化碳反应的化学方程式____ ，为了维持气压稳定，可以使用超氧化钾和过氧化钾的混合物使吸收的CO₂与生成的O₂体积相同（同温同压），则它们的物质的量之比为n（KO₂）：n（K₂O₂）=____ ；

（3）KO₂加热至600℃部分分解得到产物A．6.30g产物A充分吸收二氧化碳生成碳酸钾并产生氧气1.12L（标准状况），试确定产物A中钾氧两种原子个数之比．____ 如果产物A只含有两种化合物，写出所有可能的化学式并计算A中两种化合物的物质的量之比．　____ ．

阅读短文，下列问题

B

    Is there something strange high up in the world's tallest mountains? If so, is it a big bear（熊）? Is it a monkey? Or is it a kind of man?

    No one knows.This mystery（谜）has puzzled（困惑）the world（世界）for years.

    In 1887, a mountain climber found large footprints（脚印）in the snow.They looked like the footprints of a very large man. But men don't walk without（无、没有）shoes in the snow!

    In 1906, another climber saw more than footprints. Far off, he saw a very large animal standing on two legs. When he watched, it ran very quickly.

    Fifteen years later newspapers had new stories about the “something”. A mountain climber said he had seen the “Snowman” walk slowly across（穿过）the snow, far below him. He said it looked like a very large man.

    From then on, more and more people had stories to tell. But not until 1951 did a mountain climber bring back pictures of large footprints. The pictures showed that the Snowman walked on two legs. So it was not a bear or a monkey. Could it be an ape（猿）man? The mystery grew! And the mystery keeps growing. Someday we may find out just what it is that makes the large footprints.

一只雌猫一次产了三只小猫，这三只小猫在毛色上不完全相同，则说明物体具有（  ）